I dunno how I feel about this one. Battles are meant to be chaotic and if you get more skillful you'll be able to manage your troops better and know what there doing. On the other hand it would make things easier. I don't think a glow would look that good on screen either. But ya if you have a strategy in mind you'll know what your troops are doing. Plus your troops will probably where different color clothes such as blue team or red team and if there diffrent races that'll make it even easier to tell them apart. Overall I'd probably sway away from making them glow.

Other then that I think it would be nice if you move your cursor over your units they glow(highlighted) so you know they are selected. This would also help if your units are engaged with another melee unit in a tangled mess. Each unit of that battalion would glow.